Combined watchman&#39;s clock and telephone system.



F. G. DURYEE.

COMBINED WATCHMANS CLOCK AND TELEPHONE SYSTEM.

APPLIGATION FILED MAR.B.1910,

1,010,415. Patented Dea, 1911.

INVENTDH FEED. G. DUR YL'E.

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His TTURNEK UNTTED STATES PATENT oEEioE.

FREDERICK G. DURYEE, F FORT WAYNE, INDIANA,`ASSIGNDR ".LC` GENERALELECTRIC COMPANY,` A CORPORATION 0F NEW YORK.

COMBINED WATCHMANS CLOCK AND TELEPHONE' SYSTEM.

Specication of Letters Eatent.

Patented Dec, 5, gl.

Application mea umh 3,1910. serial no. 548,03?.

To all whom it may concern: y

Be it known that I, FREDERICK G. DURYEE,

a citizen of the United States, residing at' the object of my inventionis to adapt such a. system for use also as a telephone system to enablethe Watchman on his rounds to communicate fromy any one of the stationslwith the head watchman, or other person, at the central oiiice.

The ordinary Watchmans clock recorder system comprises a clock recorderat the central office, a number of circuits extending from t-heclockrecorder to the several stations, and means at each station forclosing the circuit at that station .to actuate the clock recorder. Acommon return is ordinarily employed for the several circuits.

My invention consists in placing in cir- A cuit with each station a timelimit device with signaling means controlled thereby so as to beactuated when the circuit at any station is kept. closed for apredetermined time, together with means for cutting a telephone intocircuit at any of the stations. A single .time limit device may beplaced in the portion of the circuit common to all the circuits, so asto be operable from all the stations. With the Watchmans system thusarranged, if a watchman passing the station merely Wishes to actuate therecording clock, he

closes the circuit at that station momen` is in series with the circuit.

and I preferably employ indicating means at each station, responsive tothis decrease in current,.for indicating that the teiephone at thecentral oiiice is out into circuit. The Watchman at the station thencuts telen phone into circuit and communicates through it withthe-central oiiice.

My linvention wiii best be understood by reference to the accompanyingdrawings in Which- Figure 1 shows diagrammaticaliy combined clockrecorder and telephone system arranged in accordance with my invent-ion,and Fig. 2 shows a detail of the plug for making the telephoneconnection.

In the drawings, A represents the clock recorder, which is merelyindicated in outline, since the structure of such devices is lWellunderstood in the art and forms no part of my invention. Certain of the'actuating magnet coils of the clock are indicated at a. These coils areincluded in the circuits which run to the several stations, of which Ihave indicated six on the drawing, num bered B to B5. 0f course, thenumber of stations may be very much larger than this. At each station isa pivoted arm C which may be moved into engagement With a. contact c soas to close the circuit at that station. The arm is normally held inoii' position by a spring c. This spring also serves to return the armto i oif position after it has been moved into engagement with the con'tact c and released. Thus, if the arm C is simply moved to a midposition, that is, to an approim'ately vertical position and thenreleased,v thepcircuit at that station is momentarily closed and therecording clock actuated in the usual manner. If the arm C is moved tothe vextreme on position, it isv held in that position by a magnet Dwhich The Several circuits have a common portion consisting of thecommon return wire e, a battery E,

the heating coil F of a thermostat, and coni tacts f actuated by thehook su porting the receiver of a telephone G. en the arm C is moved tothe extreme on position and held there by its magnet l), the'currentiiowing through the heating coil F causes theV thermostat, after apredetermined time, to close a local circuit containing a bell H andsource of current I. This not-ities the head watchman that some otherWatchman wishes to speak to him. When he moves the receiver of thetelephone G' from the hook, the circuit of thermostat F is opened atcontacts f and the telephone G c'ut into circuit in its place. Theresistance of theftelephone i's much higher than that of the thermostat,so that the current is greatly reducedv when the head watchman takes'thereceiver from the hook. This decrease in current causes the magnet Dtorelease the arm C at the station, so that the arm is pulled back to oiposition by the spring c; The watchman at the station now cuts in theportable telephone which lie carries with him by means of a'plug K(shown at station B4) and contacts J. Thisiplug, as is shown in Fig. 2,comprises simply two contact pieces separated by a-strip of insulationso that the portable telephone apparatus L is cut into circuit betweenthecontacts J. As soon as the conversation is over, the plug K iswithdrawn and the receiver of tele'- phone Gr replaced on the hook, andthe system is restored to its former condition. Thus, it will be seenthat by means of my invention, without in any way interfering with thenormal operation of the system as a watclimans clock system, simple andready means for telephonie communication is provided between each of thestations and the central oiiice.

.l do not desire to limit myself to the particular arrangement of partsshown and de= scribed, but aim in the appended claims to cover allmodifications which are withiii the spirit and scope of my invention.

' 'What I claim as new and desire to secure by Letters Patent of theUnited States, is.-

Il. A combined watchmans clock and telephone system,` comprising awatchmans clock recorder, a plurality of circuits eX- tending from saidrecorder to the several stations, means at each station 'for closing thecircuit at that station to actuate the-' recorder, a time limitdeviceincluded in said circuit, a signaling device controlled by said timelimit device so as to be actuated when said circuit is kept closed apredetermined time, and meansat each station orcutting a telephone intotlie circuit at that station.

Q. A combined Watchmans clock and telephone system, comprising aWatclimans clock recorder, a plurality of circuits eX- tending from saidrecorder to the several stations, said circuits having a common return,means at each station for closing the circuit at that station to actuatethe recorder, a time limit device included in the portion of the circuitcommon to all the circuits, a signaling device controlled by said timelimit device so as to'be actuated when any one of said circuits is keptclosed a predetermined time, and means at each station for cutting atelephone into the circuit at that station.

3. A combined watchmans clock and telephone system, comprising awatchman`s clock recorder, a, plurality of circuits extending from saidrecorder to the several stations, said circuits having a common return,

means at each station for closing the circuit at that station to actuatethe recorder, a time limit device included in the portion of the circuitcommon to all the circuits, a signaling device.controlled by saidtimelimit device so as to be actuated when any one of said circuits iskept-closed a, redetermined time, means at said signaling evice forcuttiig'a telephone into said common portion of the circuit, means atsaid station for indicating the cutting in of said telephone, and meansfor cutting into circuit a telephone at said station.

4. A combined watchmans clock and telephone system, comprising a'watchmans clock recorder, a plurality of circuits extending rom saidrecorder to the several stations, said circuits having acommon return,means at eachstation for closing the ci rcuitat that station to actuatethe recorder, a time limit device included in the portion of the circuitcommon to all the circuits, a signaling device controlled by said timelimit device so as to be actuated when any one of said circuits is keptclosed a predetermined time, means at said signaling device for cuttinga telephone into said common portion of the circuit, indicating means atsaid station responsive to the decrease of current incident to thecutting in 'of said telephone, and means for cutting into circuit atelephone at said station.

5. A combined Watchmans clock and telephone system, comprising aWatchmans recorder, a plurality of circuits extending from said recordertothe several stations, said circuits having a common return, a movableswitch member at 'each station, means for normally holding said memberin off position and returning it to said posit-ion when released, acontact adapted to be engaged by said member to close -the circuit atsaid station to actuate said recorder when the member is moved toextreme on position or to a mid position, a magnet in said circuit forretaining said member in extreme on position, a time limit deviceincluded inthe'portion of the circuit common to all the circuits, a. sialing device controlled by said time limit device so as to be actuatedwhen any one of said movable members is maintained in on position, meansat said signaling device forV In Witness whereof, I have hereunto setcutting a telephone into circuit, the retainmy hand this 4th day ofMarch, 1910.

inv magnet for 'the movable member being adlpted to release said memberupon the re- FRED' G' DURYEE duct-ion of current incident to cuttingsaid Witnesses: telephone into circuit, and means for cut- JAMES J.Woon,

ting a telephone into circuit a't any station. EDWARD A. BARNES.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

